Detecting Changes of a Distant Gas Source with an Array of MOX Gas Sensors

Sensors

Sepideh Pashami¹  Achim J. Lilienthal² 

[1] Centre for Applied Autonomous Sensor Systems,Örebro University,Örebro SE-70182, Sweden;

关键词: MOX sensor;    open sampling system;    sensor selection;    change point detection;   

DOI  :  10.3390/s121216404

来源: mdpi

【 摘 要 】

We address the problem of detecting changes in the activity of a distant gas source from the response of an array of metal oxide (MOX) gas sensors deployed in an open sampling system. The main challenge is the turbulent nature of gas dispersion and the response dynamics of the sensors. We propose a change point detection approach and evaluate it on individual gas sensors in an experimental setup where a gas source changes in intensity, compound, or mixture ratio. We also introduce an efficient sensor selection algorithm and evaluate the change point detection approach with the selected sensor array subsets.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland